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EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001
info@euroquartz.co.uk
www.euroquartz.co.uk
EURO QUARTZ
DESCRIPTION
CX14SM crystals are designed for applications requiring very small
footprint and low profile (<0.59mm). Using micro-machining
processes this hermetically-sealed crystal ensures high stability and
low ageing.
FEATURES
Designed for infrared, vapour phase or epoxy mounting
Low profile, (<0.59mm) hermetically sealed ceramic
package
Excellent ageing characteristics
High shock and vibration resistance
Full military testing available
Available with glass or ceramic lid
CX14SM AT CRYSTAL
Ultra-Miniature SMD Crystal
20MHz to 50MHz
HOW TO ORDER CX14SM AT CRYSTALS
CX14 - S
-
C
-
SM1
-
26.0M,
100
/ 100 / - /
I
'S' if special,
custom design.
Otherwise leave
blank
Blank = glass lid
C = ceramic lid
Frequency
M = MHz
Calibration
Tolerance
@25°C
(in ppm)*
Temp. Range
C = -10° ~ +70°C
I = -40° ~ +85°C
M = -55° ~ +125°C
S = Customer specified
Frequency
Stability over
Temp. Range
(in ppm)*
*Alternative 'total' tolerance (in ppm)
CRYSTAL EQUIVALENT CIRCUIT
R1 Motional Resistance
L1 Motional Inductance
C1 Motional Capacitance
C0 Shunt Capacitance
PACKAGING OPTIONS
CX14SM AT crystals are available either tray packed (<250pcs) or
tape and reel (>250 pieces).
12mm tape, 178mm or 330mm reels (EIA 418).
Specifications stated are typical at 25°C unless otherwise indicated.
Specifications may change without notice.
SPECIFICATION
1.
Other tolerances available, contact Euroquartz sales
2.
Unless specified otherwise.
3.
Does not include calibration tolerance. (Frequency stability
characteristics follow that of the AT-Cut thickness-shear mode.)
4.
5ppm maximum for frequencies below 40MHz. For tighter
tolerances and higher frequencies contact Euroquartz sales.
5.
A higher shock version available.
6.
Per MIL-STD-202G, Method 204D, Condition D. Random
vibration testing also available.
Standard Calibration Tolerance1: ±100ppm or tighter as required.
Load Capacitance2:
10pF (or as specified)
Drive Level:
100W maximum
Frequency Stability1,3
-10° to +70°C:
±50ppm to ±10ppm
-40° to +85°C:
±100ppm to ±20ppm
-55° to +125°C:
±100ppm to ±30ppm
Ageing, First Year4:
±5ppm maximum
(Better than ±1ppm available)
Shock, Survival5:
5000g, 0.3ms, sine
Vibration, Survival6:
20g rms, 10~2000Hz swept sine
Operating Temperature Range:
-10°C to +70°C (Commercial)
-40°C to +85°C (Industrial)
-55°C to +125°C (Military)
Storage Temperature Range:
-55° to +125°C
Maximum Process Temperature:
+260°C for 20 seconds
OUTLINE & DIMENSIONS
Terminations
SM1 = Gold plated *
SM2 = Solder plated
SM3 = Solder dipped
SM4 = Solder plated *
SM5 = Solder dipped *
* = Lead free
Fundamental Frequency:
26.0MHz
50.0MHz
Motional Resistance R (Ω):
20
25
Motional Capacitance C1 (fF):
3.5
3.0
QualityFactor Q (k):
80
40
Shunt Capacitance C0 (pF):
1.0
1.5
SM1
0.63
0.59
0.52
SM2
0.65
0.61
0.54
SM3
0.67
0.63
0.56
SM4
0.65
0.61
0.54
SM5
0.67
0.63
0.56
Glass
Lid
Ceramic
Lid
Dim. H
Thin Glass
Lid